Fun fact: if you face the hiding place with your back to the cafe, you'll be able to catch a glimpse of a tree house in the adjoining property behind the wall.
The cache is a small cylindric container.
The 1907 Irish International Exhibition: how Herbert Park came to be.
"Running from the 4th of May to the 9th of November 1907, it received an astonishing 2.75 million visitors. The centrepiece was the Grand Central Palace, a large dome with halls radiating from it containing a gallery of fine arts with works lent by, among others, the Tsar of Russia. Other attractions were the Palaces of Industry and Mechanical Arts, the Great Celtic Court, Concert Hall, the Popular Restaurant and even an entire Somalian village."
"When the exhibition finished, the grounds were handed back to Pembroke Urban District Council for use as a public park, familiar to us today as Herbert Park."
Link to a walking trail around Ballsbridge: https://www.ballsbridgeliving.ie/ballsbridge-walking-trail-map